Recycled water (RW) containing compost leachate can be a potent source of foul odor on mushroom composting sites. Samples of RW were repeatedly collected from storage tanks and pits of 14 mushroom composting sites in England and Ireland. Relationships between the effects of submerged aeration of the RW, the chemical and microbial characteristics of the RW, and the odors emitted were investigated. ...

INTRODUCTION Safety is an important issue in process design and operation in chemical industry. It is even more critical for modern chemical manufacturing processes, which are either operated under extreme conditions to achieve maximum economic profit, or are highly flexible, such as the specialty chemical or pharmaceutical processes. The importance of safety analysis in process operation is ...

In response to pressing issues facing the new Department of Homeland Security, over 15,000 chemical and industrial plants may have to evaluate their vulnerability to terrorist attack and improve countermeasures at their facilities. Federal lawmakers are considering two bills requiring facilities to submit site security plans: the Chemical Security Act (Senate Bill S. 157, reintroduced in January, ...

Mafikeng, the capital of the North West Province, receives water from two sources, namely the Molopo eye and the Modimola dam. Once treated, the potable water is mixed and supplied to the city via distribution systems. This study was designed to assess the quality of drinking water in Mafikeng and also to determine whether the water from the two sources has an impact on the mixed water ...

Site Remediation The Spolchemie site was chosen as one of the NanoRem case study sites, to test two types of nanoparticles (NPs) (zerovalent iron - nZVI and iron oxide NPs) for in situ remediation of BTEX (Benzene, Toluene, Ethylbenzene, and Xylenes) contamination. Nanoremediation was seen as an opportunity to enhance the in situ biodegradation of the BTEX contaminants and to reduce the ...

Regeneration of transformer oil at the transformer’s location is an important preventive measure of transformer servicing. Transformer life time is, in essence, the life time of its insulation system. The most widely used insulation is liquid insulation (transformer oils) and solid insulation (paper, i.e. cellulose insulation). The oil provides for at ...

Charleston, South Carolina, USA Project Bioremediation of Soil Containing Toxaphene and DDT Summary The application of DARAMEND® served to reductively dechlorinate and subsequently mineralize chlorinated herbicides and pesticides present in soil. This project was the third in a series of three pilot-scale projects aimed at validating DARAMEND® ...

The consequences of a lack of control when using chemical substances in the workplace are well known and apparent. Any health and safety expert can tell you of at least one major accident whereby poor chemical management policies and procedures have lead to disaster. Examples include Bhopal, Grangemouth, Flixborough, Seveso and more recently, Buncefield. Major accidents like ...

In May, with very little fanfare, Walmart introduced an extraordinary new tool known as GreenWERCS. GreenWERCS assesses the composition of chemical intensive products -- which is just about any non-food item on a Walmart shelf that you can pour, squeeze, dab or otherwise apply to your body or use in or around your home or car. GreenWERCS analyzes the composition of individual products from ...

The Industrial Pollution Control Association of Japan (IPCAJ) has conducted an air quality study. A brief summary has already appeared in previous papers. This set of data was not sufficiently analysed. This study attempts to examine the performance of the Positive Matrix Factorisation (PMF), a recently introduced technique in this field, on this multiple-site Kashima data set. The source ...

Thane Creek is one of the most important ecosystems around Mumbai and Thane, and the mangroves surrounding the ecosystem form the vital green lung for the residents. It is also an important feeding and breeding ground for fishes. Locals have been living in harmony amidst this ecosystem for ages, but in recent past, man has misused this ecosystem by way of releasing sewage, dumping solid waste, ...

Wastewater containing chromium and other heavy metals, is highly toxic effluents which require high-quality and efficient purification. Such effluents formed during electroplating, other types of chemical, electrochemical surface treatment of metal products such as chromium-plating, nickel-plating, copper-plating, zinc-plating, cadmium-plating and also during some technological ...

Chemical cleaning is an important offering within Clean Harbors’ portfolio of industrial cleaning/maintenance services for refineries, petrochemical processors and other process manufacturers. Along with high-pressure cleaning, pigging, Tech Sonic sound wave cleaning and other technologies, chemical leaning is a safe, efficient and cost-effective way to remove corrosion, deposits, residual ...

In this edition of Peroxygen Talk, guest authors Matt Burns and Bob Pirkle discuss the benefits of compound specific isotope analysis (CSIA) to optimize delivery and monitor performance of ISCO applications. Mr. Burns is a Senior Project Director at WSP Environment & Energy, a leading environmental, energy and sustainability consultancy with over 1,000 people in 65 global locations. He has more ...

Scenario-based pollutant load analysis was conducted to develop a part of a concept for planning and management of wastewater treatment systems (WWTSs) under the mixture conditions of centralised and on-site WWTSs. Pollutant discharge indicators and pollutant removal efficiency functions were applied from another paper in the series, which were developed based on the existing conditions in urban ...

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